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Finding the Fourth Proportional to 192,807.60, 289,168.20 and 126,711.60

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Solution

The fourth proportional to 192,807.60, 289,168.20 and 126,711.60 is: 190,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,807.60 : 289,168.20 = 126,711.60 : x
  2. Step 2: Convert to fraction form
    192,807.60/289,168.20 = 126,711.60/x
  3. Step 3: Cross multiply
    192,807.60x = 289,168.20 × 126,711.60
  4. Step 4: Simplify right side
    192,807.60x = 36,640,965,291.12
  5. Step 5: Solve for x
    x = 36,640,965,291.12/192,807.60
  6. Step 6: Final answer
    x = 190,039.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.